Pavel Povinec

Isotopes as Tracers in Marine Environmental Studies &#x2013; A Forthcoming Collection of Papers in the Isotopes in the Environment Domain

this work describ experiment investig model studi sorption radionuclid 134 60 85 certain marin sediment within egypt the chemic composit marin sediment determin the solubl salt were measur sediment concentr releas cation 3 3 4 were measur sediment materi 01 naclo 4 aqueous solut differ hydrogen ion concentr the two main factor control uptak radionuclid onto sediment exchang capac sediment materi surfac complex model use estim surfac charg densiti electr surfac potenti marin sediment materi these two paramet were calcul surfac capac site sediment materi the desorpt adsorb cation determin mean select consecut extract test use differ chemic reagent includ 1 1 mgcl 2 7 2 1 ammonium oxal 35 3 004 2 hcl 25 acet acid 34 4 2 2 5 hno 3 23 5 digest nitric acid follow hydrofluor perchlor acid 2

Nariman H.M. Kamel

The Behaviour of 134Cs, 60Co, and 85Sr Radionuclides in Marine Environmental Sediment

simpl rapid method has been develop determin 226 rock soil sediment sampl decompos fusion lithium metabor melt dissolv solut contain sulfat citric acid dure dissolut fine suspens mix barium radium sulfat form the microcryst collect membran filter pore size 01 analys alpha spectromet applicat 133 tracer enabl assess loss analyt which onli rare exceed 10 all analyt oper begin from sampl decomposit sourc prepar alpha spectrometri can accomplish within 1 2 hwith uranium determin filtrat spike 232 tracer pass through column load dowex 1 4 anionexchang resin sulfat form interfer element elut dilut sulfur acid follow concentr hydrochlor acid uranium elut water electrodeposit silver disc analys alpha spectromet the method test refer soil sediment materi found accur within estim uncertainti

R. Bojanowski

Z. Radecki

R. Piekoś

Rapid Determination of 226Ra and Uranium Isotopes in Solid Samples by Fusion with Lithium Metaborate and Alpha Spectrometry

there mani divers use acceler mass spectrometri ams 14 studi our laboratori includ much research relat paleoclim 14 tracer past chang environment condit observ coral marin sediment mani terrestri record terrestri record can also show influenc ocean oscil whether short term enso niño southern oscillat millenni time scale tracer applic have develop use 129 well 14 tracer nuclear pollut studi around radioact wast dump site collabor iaea discuss some applic carri out tucson sever field hope give some idea breadth studi

J.T. Jull

G.S. Burr

J.W. Beck

D.J. Donahue

D. Biddulph

A. L. Hatheway

T. E. Lange

L. R. McHargue

Accelerator Mass Spectrometry at Arizona: Geochronology of the Climatic Record and Connections with the Ocean

seawat from western coast svalbard sampl spring summer 2000 determin level technetium99 99 conservativebehav manmad radionuclid origin from european nuclear reprocess plant this paper deal recent level radionuclid seawat link between arctic fjord kongsfjorden western spitsbergen current wsc investig use 99 result mean wsc 99 radionuclid ultim reach eastern fram strait west spitsbergen largest island svalbard archipelago result from oceanograph model sea ice observ indic direct coupl between kongsfjorden area west the find connect new radionuclid result present paper concur assumpt furthermor indic inner part kongsfjorden also well link wsc surfac seawat from central part wsc sampl dure cruis polarstern summer 2000 show higher level 99 than those measur kongsfjorden spring 2000 howev all level measur surfac water same order magnitud data from sampl deeper water wsc area provid inform pertain later distribut 99 the result along addit data from spring 2001 indic kongsfjorden suitabl monitor level 99 arriv european arctic shelter set fjord doe necessarili provid protect against pollut from open sea

Sebastian Gerland

Bjørn Lind

Mark Dowdall

Anne Kathrine Kolstad

Recent Levels of Technetium-99 in Seawater at the West Coast of Svalbard

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